What if I don’t use a laptop I bought for business use?

I've been freelancing for over a year now and use my desktop PC that I have owned for several years for everything I do business- and pleasure-wise. I work at home but was anticipating a small gig that would require me to travel so I bought a laptop in December 2022 for about $700. The gig I was expecting didn't pan out.

I could use some help understanding the following scenarios for tax purposes:

(1) Can I claim the laptop for business purposes even if it just sits there being unused? The purchase would not have happened for any other reason (I don't even like laptops).

(2) Let's say I get a gig or two (or even 100) during 2023, is there any reason I can't include this laptop as a business expense (assuming I only use it for business).

(3) I was planning on expensing the entire (100%) $700 on my 2022 taxes. Would I have had to use the computer in 2022?

(4) With regard to line (3), how many years would I have to use it for business purposes before I could use it for non-business purposes (considering the initial 100% claim)? Are there any statute of limitations?